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IAmazonRekognition.StartLabelDetection (StartLabelDetectionRequest)

Method

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Starts asynchronous detection of labels in a stored video.

Amazon Rekognition Video can detect labels in a video. Labels are instances of real-world
entities. This includes objects like flower, tree, and table; events like wedding,
graduation, and birthday party; concepts like landscape, evening, and nature; and
activities like a person getting out of a car or a person skiing.

The video must be stored in an Amazon S3 bucket. Use Video to specify the bucket
name and the filename of the video. StartLabelDetection returns a job
identifier (JobId) which you use to get the results of the operation.
When label detection is finished, Amazon Rekognition Video publishes a completion
status to the Amazon Simple Notification Service topic that you specify in NotificationChannel.

To get the results of the label detection operation, first check that the status value
published to the Amazon SNS topic is SUCCEEDED. If so, call and pass
the job identifier (JobId) from the initial call to StartLabelDetection.

Note:

For .NET Core and PCL this operation is only available in asynchronous form. Please refer to StartLabelDetectionAsync.

An Amazon Rekognition service limit was exceeded. For example, if you start too many
Amazon Rekognition Video jobs concurrently, calls to start operations (StartLabelDetection,
for example) will raise a LimitExceededException exception (HTTP status
code: 400) until the number of concurrently running jobs is below the Amazon Rekognition
service limit.